Alert archive / Iowa / Mesoscale Discussions

Mesoscale Discussions in Iowa, 2010

259 mesoscale discussions in 2010. An alert counts here when it covered any part of the state, so the counties below add up to more than the state. The archive of mesoscale discussions reaches back to 2003.

Mesoscale Discussions by county

Each county as a circle sized by its count in 2010. Tap one for its archive.

Mesoscale Discussions
259
Busiest month
June79 mesoscale discussions
Busiest day
June 18, 201012 mesoscale discussions

Over time

By month

The alerts

Every alert, in the order issued. Times are local, Central Time. Each opens its own page with the text, the map, the radar and the sounding.

IssuedProductOfficeCountiesLasted
Jan 19, 11:54 PM CSTMesoscale DiscussionSPCAdair, Appanoose, Audubon, Boone, Buena Vista, Calhoun and 31 more5 hr
Jan 20, 3:58 AM CSTMesoscale DiscussionSPCBenton, Boone, Buena Vista, Calhoun, Carroll, Cedar and 48 more4 hr
Jan 20, 10:34 AM CSTMesoscale DiscussionSPCAllamakee, Benton, Black Hawk, Bremer, Buchanan, Butler and 21 more4 hr
Jan 25, 5:30 PM CSTMesoscale DiscussionSPCBenton, Black Hawk, Boone, Buena Vista, Calhoun, Carroll and 34 more3 hr
Apr 1, 11:31 PM CDTMesoscale DiscussionSPCLyon, O'Brien, Osceola, Plymouth, Sioux, Woodbury89 min
Apr 2, 8:28 AM CDTMesoscale DiscussionSPCAdair, Adams, Appanoose, Clarke, Dallas, Davis and 25 more92 min
Apr 2, 11:35 AM CDTMesoscale DiscussionSPCAllamakee, Appanoose, Benton, Black Hawk, Bremer, Buchanan and 37 more85 min
Apr 4, 11:02 AM CDTMesoscale DiscussionSPCDes Moines, Lee88 min
Apr 4, 2:22 PM CDTMesoscale DiscussionSPCAppanoose, Davis, Lee, Van Buren113 min
Apr 4, 6:23 PM CDTMesoscale DiscussionSPCAppanoose, Davis, Des Moines, Henry, Jefferson, Lee and 4 more67 min
Apr 5, 11:11 AM CDTMesoscale DiscussionSPCAdair, Adams, Appanoose, Cass, Clarke, Davis and 16 more64 min
Apr 5, 4:04 PM CDTMesoscale DiscussionSPCAdair, Adams, Appanoose, Audubon, Benton, Boone and 40 more56 min
Apr 5, 5:23 PM CDTMesoscale DiscussionSPCBenton, Black Hawk, Buchanan, Cedar, Clinton, Delaware and 11 more67 min
Apr 5, 7:24 PM CDTMesoscale DiscussionSPCDecatur, Fremont, Page, Ringgold, Taylor66 min
Apr 5, 9:37 PM CDTMesoscale DiscussionSPCBenton, Buchanan, Clayton, Delaware, Dubuque, Fayette and 3 more53 min
Apr 5, 9:54 PM CDTMesoscale DiscussionSPCAppanoose, Clarke, Decatur, Page, Ringgold, Taylor and 2 more66 min
Apr 6, 1:20 AM CDTMesoscale DiscussionSPCAdair, Adams, Audubon, Boone, Calhoun, Carroll and 34 more85 min
Apr 6, 4:05 AM CDTMesoscale DiscussionSPCBenton, Black Hawk, Boone, Bremer, Buchanan, Butler and 25 more85 min
Apr 6, 1:32 PM CDTMesoscale DiscussionSPCAdair, Adams, Audubon, Clarke, Dallas, Decatur and 14 more58 min
Apr 6, 4:55 PM CDTMesoscale DiscussionSPCAllamakee, Benton, Black Hawk, Bremer, Buchanan, Chickasaw and 8 more65 min
Apr 6, 6:16 PM CDTMesoscale DiscussionSPCAppanoose, Benton, Cedar, Clarke, Davis, Decatur and 20 more59 min
Apr 6, 7:36 PM CDTMesoscale DiscussionSPCAllamakee, Clayton, Fayette54 min
Apr 6, 8:46 PM CDTMesoscale DiscussionSPCCedar, Clinton, Des Moines, Henry, Jackson, Jefferson and 8 more59 min
Apr 6, 9:51 PM CDTMesoscale DiscussionSPCAllamakee, Clayton, Fayette, Winneshiek54 min
Apr 23, 4:10 PM CDTMesoscale DiscussionSPCAdams, Cass, Fremont, Mills, Montgomery, Page and 4 more95 min
Apr 23, 7:02 PM CDTMesoscale DiscussionSPCFremont, Harrison, Mills, Monona, Pottawattamie88 min
Apr 23, 9:22 PM CDTMesoscale DiscussionSPCFremont, Harrison, Mills, Monona, Pottawattamie53 min
Apr 24, 3:15 AM CDTMesoscale DiscussionSPCDecatur, Union30 min
Apr 24, 1:29 PM CDTMesoscale DiscussionSPCAdair, Adams, Audubon, Buena Vista, Calhoun, Carroll and 30 more91 min
Apr 29, 3:49 PM CDTMesoscale DiscussionSPCAdams, Cass, Fremont, Harrison, Mills, Montgomery and 3 more86 min
Apr 29, 5:18 PM CDTMesoscale DiscussionSPCAdair, Audubon, Boone, Butler, Calhoun, Carroll and 23 more57 min
Apr 29, 7:12 PM CDTMesoscale DiscussionSPCCrawford, Fremont, Harrison, Mills, Monona, Montgomery and 3 more63 min
Apr 29, 8:23 PM CDTMesoscale DiscussionSPCAdair, Adams, Audubon, Boone, Butler, Calhoun and 23 more67 min
Apr 29, 11:04 PM CDTMesoscale DiscussionSPCFremont, Mills, Montgomery, Page, Pottawattamie26 min
Apr 29, 11:21 PM CDTMesoscale DiscussionSPCAdair, Adams, Audubon, Boone, Calhoun, Carroll and 13 more54 min
Apr 30, 2:12 AM CDTMesoscale DiscussionSPCAdair, Adams, Dallas, Hardin, Madison, Polk and 3 more93 min
Apr 30, 9:18 AM CDTMesoscale DiscussionSPCAppanoose, Davis, Decatur, Des Moines, Henry, Iowa and 16 more57 min
Apr 30, 12:01 PM CDTMesoscale DiscussionSPCAllamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more29 min
Apr 30, 1:22 PM CDTMesoscale DiscussionSPCAppanoose, Benton, Black Hawk, Buchanan, Davis, Delaware and 19 more53 min
Apr 30, 2:41 PM CDTMesoscale DiscussionSPCCedar, Clinton, Des Moines, Dubuque, Henry, Jackson and 3 more64 min
Apr 30, 5:37 PM CDTMesoscale DiscussionSPCClinton, Jackson, Scott53 min
May 2, 2:15 PM CDTMesoscale DiscussionSPCAdair, Adams, Audubon, Cass, Clarke, Dallas and 15 more90 min
May 4, 2:49 PM CDTMesoscale DiscussionSPCAllamakee, Black Hawk, Bremer, Buchanan, Buena Vista, Butler and 25 more56 min
May 6, 9:11 PM CDTMesoscale DiscussionSPCPage, Ringgold, Taylor34 min
May 6, 11:49 PM CDTMesoscale DiscussionSPCDecatur, Fremont, Page, Ringgold, Taylor86 min
May 7, 2:31 AM CDTMesoscale DiscussionSPCAppanoose, Davis, Decatur, Des Moines, Henry, Lee and 4 more59 min
May 12, 7:20 PM CDTMesoscale DiscussionSPCFremont, Mills, Page55 min
May 12, 8:00 PM CDTMesoscale DiscussionSPCAppanoose, Clarke, Davis, Decatur, Des Moines, Henry and 8 more90 min
May 12, 11:24 PM CDTMesoscale DiscussionSPCAppanoose, Davis, Des Moines, Henry, Jefferson, Lee and 2 more96 min
May 22, 6:28 AM CDTMesoscale DiscussionSPCAdair, Audubon, Buena Vista, Calhoun, Carroll, Cass and 23 more92 min
May 23, 5:56 PM CDTMesoscale DiscussionSPCLyon, Osceola64 min
May 25, 12:59 PM CDTMesoscale DiscussionSPCAllamakee, Clayton, Clinton, Delaware, Dubuque, Jackson and 2 more91 min
Jun 1, 10:21 AM CDTMesoscale DiscussionSPCAdair, Adams, Audubon, Boone, Buena Vista, Calhoun and 31 more54 min
Jun 1, 1:36 PM CDTMesoscale DiscussionSPCAdair, Audubon, Boone, Buena Vista, Butler, Calhoun and 43 more54 min
Jun 1, 5:39 PM CDTMesoscale DiscussionSPCAdair, Adams, Appanoose, Audubon, Boone, Buena Vista and 52 more96 min
Jun 1, 9:17 PM CDTMesoscale DiscussionSPCAppanoose, Cedar, Clarke, Clinton, Davis, Decatur and 22 more118 min
Jun 1, 9:24 PM CDTMesoscale DiscussionSPCAdair, Adams, Appanoose, Cass, Clarke, Dallas and 21 more66 min
Jun 1, 11:36 PM CDTMesoscale DiscussionSPCDes Moines, Henry, Lee54 min
Jun 3, 9:15 PM CDTMesoscale DiscussionSPCLyon, Monona, Plymouth, Sioux, Woodbury60 min
Jun 3, 11:38 PM CDTMesoscale DiscussionSPCBuena Vista, Cherokee, Clay, Crawford, Dickinson, Emmet and 11 more37 min
Jun 4, 1:43 PM CDTMesoscale DiscussionSPCAppanoose, Cedar, Clarke, Clinton, Davis, Decatur and 21 more2 hr
Jun 4, 7:36 PM CDTMesoscale DiscussionSPCDes Moines, Lee54 min
Jun 4, 10:27 PM CDTMesoscale DiscussionSPCLee, Van Buren33 min
Jun 4, 11:10 PM CDTMesoscale DiscussionSPCAdair, Adams, Appanoose, Audubon, Carroll, Cass and 25 more65 min
Jun 5, 1:19 AM CDTMesoscale DiscussionSPCAdair, Adams, Appanoose, Audubon, Cass, Clarke and 17 more3 hr
Jun 5, 2:29 AM CDTMesoscale DiscussionSPCAdair, Adams, Appanoose, Audubon, Cass, Clarke and 24 more2 hr
Jun 5, 6:52 AM CDTMesoscale DiscussionSPCAdair, Adams, Appanoose, Cass, Clarke, Davis and 22 more83 min
Jun 5, 2:31 PM CDTMesoscale DiscussionSPCAdair, Adams, Allamakee, Appanoose, Audubon, Benton and 77 more119 min
Jun 5, 9:20 PM CDTMesoscale DiscussionSPCDes Moines, Lee115 min
Jun 8, 2:56 AM CDTMesoscale DiscussionSPCAdair, Adams, Audubon, Carroll, Cass, Crawford and 13 more2 hr
Jun 10, 10:02 AM CDTMesoscale DiscussionSPCAdair, Adams, Audubon, Benton, Black Hawk, Boone and 70 more88 min
Jun 11, 1:07 AM CDTMesoscale DiscussionSPCCherokee, Lyon, O'Brien, Osceola, Plymouth, Sioux and 1 more53 min
Jun 11, 4:11 AM CDTMesoscale DiscussionSPCBuena Vista, Calhoun, Cherokee, Clay, Crawford, Dickinson and 13 more64 min
Jun 11, 5:01 PM CDTMesoscale DiscussionSPCAllamakee, Benton, Black Hawk, Buchanan, Cedar, Clayton and 11 more89 min
Jun 12, 3:16 AM CDTMesoscale DiscussionSPCFremont, Harrison, Mills, Monona, Montgomery, Page and 2 more59 min
Jun 12, 4:21 AM CDTMesoscale DiscussionSPCIowa, Johnson, Keokuk, Mahaska, Marion, Warren and 1 more84 min
Jun 12, 5:27 AM CDTMesoscale DiscussionSPCFremont, Mills, Montgomery, Page, Pottawattamie63 min
Jun 13, 11:55 AM CDTMesoscale DiscussionSPCLee65 min
Jun 17, 12:03 PM CDTMesoscale DiscussionSPCBuena Vista, Cherokee, Clay, Crawford, Dickinson, Emmet and 11 more87 min
Jun 17, 3:31 PM CDTMesoscale DiscussionSPCBuena Vista, Calhoun, Carroll, Cherokee, Clay, Crawford and 16 more59 min
Jun 17, 4:32 PM CDTMesoscale DiscussionSPCFremont, Page58 min
Jun 17, 4:46 PM CDTMesoscale DiscussionSPCAllamakee, Benton, Black Hawk, Bremer, Buchanan, Butler and 19 more59 min
Jun 17, 7:39 PM CDTMesoscale DiscussionSPCAllamakee, Audubon, Benton, Black Hawk, Boone, Bremer and 46 more96 min
Jun 17, 7:55 PM CDTMesoscale DiscussionSPCMills65 min
Jun 17, 9:43 PM CDTMesoscale DiscussionSPCAllamakee, Howard, Mitchell, Winneshiek62 min
Jun 17, 10:57 PM CDTMesoscale DiscussionSPCAdair, Adams, Appanoose, Benton, Black Hawk, Buchanan and 43 more93 min
Jun 18, 2:33 AM CDTMesoscale DiscussionSPCDes Moines, Henry, Louisa, Muscatine, Scott, Washington27 min
Jun 18, 7:47 AM CDTMesoscale DiscussionSPCAdair, Audubon, Boone, Calhoun, Carroll, Cass and 20 more88 min
Jun 18, 10:41 AM CDTMesoscale DiscussionSPCAppanoose, Cedar, Clayton, Clinton, Davis, Decatur and 19 more2 hr
Jun 18, 12:14 PM CDTMesoscale DiscussionSPCCedar, Clinton, Des Moines, Dubuque, Jackson, Jones and 3 more61 min
Jun 18, 1:37 PM CDTMesoscale DiscussionSPCButler, Calhoun, Floyd, Franklin, Humboldt, Ida and 4 more113 min
Jun 18, 1:56 PM CDTMesoscale DiscussionSPCAdair, Adams, Cass, Clarke, Decatur, Fremont and 10 more94 min
Jun 18, 5:06 PM CDTMesoscale DiscussionSPCBuchanan, Cedar, Clinton, Delaware, Dubuque, Jackson and 6 more54 min
Jun 18, 5:45 PM CDTMesoscale DiscussionSPCAdair, Adams, Appanoose, Benton, Black Hawk, Buchanan and 37 more60 min
Jun 18, 7:38 PM CDTMesoscale DiscussionSPCAppanoose, Cedar, Clarke, Clinton, Davis, Decatur and 18 more97 min
Jun 18, 8:55 PM CDTMesoscale DiscussionSPCAppanoose, Davis, Decatur, Lucas, Mahaska, Marion and 3 more65 min
Jun 19, 6:55 PM CDTMesoscale DiscussionSPCFremont, Mills, Page95 min
Jun 19, 11:13 PM CDTMesoscale DiscussionSPCAdair, Adams, Appanoose, Audubon, Cass, Clarke and 29 more92 min
Jun 20, 9:35 PM CDTMesoscale DiscussionSPCBuena Vista, Carroll, Cherokee, Clay, Crawford, Ida and 8 more55 min
Jun 20, 11:00 PM CDTMesoscale DiscussionSPCAdams, Appanoose, Clarke, Decatur, Fremont, Mills and 7 more90 min
Jun 21, 3:17 AM CDTMesoscale DiscussionSPCAdair, Adams, Cass, Decatur, Fremont, Mills and 6 more58 min
Jun 21, 4:43 AM CDTMesoscale DiscussionSPCBuena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 5 more32 min
Jun 21, 7:39 AM CDTMesoscale DiscussionSPCDecatur, Fremont, Page, Ringgold, Taylor96 min
Jun 21, 12:28 PM CDTMesoscale DiscussionSPCLee62 min
Jun 21, 4:10 PM CDTMesoscale DiscussionSPCAppanoose, Davis, Decatur, Des Moines, Henry, Jefferson and 8 more35 min
Jun 21, 5:30 PM CDTMesoscale DiscussionSPCAdams, Appanoose, Clarke, Decatur, Fremont, Lucas and 7 more90 min
Jun 21, 7:00 PM CDTMesoscale DiscussionSPCAppanoose, Cedar, Davis, Des Moines, Henry, Iowa and 15 more60 min
Jun 21, 11:15 PM CDTMesoscale DiscussionSPCAdams, Fremont, Mills, Montgomery, Page, Taylor90 min
Jun 22, 4:03 AM CDTMesoscale DiscussionSPCAppanoose, Boone, Clarke, Dallas, Davis, Decatur and 27 more57 min
Jun 22, 3:37 PM CDTMesoscale DiscussionSPCCass, Crawford, Fremont, Harrison, Ida, Mills and 6 more23 min
Jun 22, 7:08 PM CDTMesoscale DiscussionSPCAdair, Adams, Audubon, Benton, Black Hawk, Boone and 66 more2 hr
Jun 22, 9:59 PM CDTMesoscale DiscussionSPCBuena Vista, Calhoun, Carroll, Cherokee, Clay, Crawford and 20 more91 min
Jun 22, 11:47 PM CDTMesoscale DiscussionSPCAdair, Adams, Allamakee, Audubon, Benton, Black Hawk and 78 more88 min
Jun 23, 12:40 AM CDTMesoscale DiscussionSPCButler, Cerro Gordo, Chickasaw, Clay, Dickinson, Emmet and 15 more95 min
Jun 23, 5:46 AM CDTMesoscale DiscussionSPCAdair, Adams, Appanoose, Audubon, Black Hawk, Boone and 28 more59 min
Jun 23, 1:01 PM CDTMesoscale DiscussionSPCCedar, Clinton, Des Moines, Henry, Johnson, Louisa and 3 more59 min
Jun 23, 2:48 PM CDTMesoscale DiscussionSPCAllamakee, Winneshiek87 min
Jun 25, 2:44 PM CDTMesoscale DiscussionSPCLyon2 hr
Jun 25, 5:32 PM CDTMesoscale DiscussionSPCAudubon, Buena Vista, Calhoun, Carroll, Cass, Cherokee and 13 more118 min
Jun 25, 5:57 PM CDTMesoscale DiscussionSPCCerro Gordo, Chickasaw, Clay, Dickinson, Emmet, Floyd and 12 more2 hr
Jun 25, 11:16 PM CDTMesoscale DiscussionSPCBenton, Buchanan, Clayton, Delaware, Dubuque, Jackson and 2 more89 min
Jun 25, 11:37 PM CDTMesoscale DiscussionSPCAdair, Adams, Audubon, Black Hawk, Boone, Buena Vista and 39 more83 min
Jun 26, 1:52 AM CDTMesoscale DiscussionSPCAdair, Adams, Appanoose, Audubon, Benton, Boone and 63 more83 min
Jun 26, 1:16 PM CDTMesoscale DiscussionSPCBenton, Black Hawk, Boone, Bremer, Buchanan, Butler and 17 more119 min
Jun 26, 3:35 PM CDTMesoscale DiscussionSPCBuena Vista, Cerro Gordo, Cherokee, Clay, Dickinson, Emmet and 14 more85 min
Jun 26, 6:00 PM CDTMesoscale DiscussionSPCBuena Vista, Cherokee, Clay, Dickinson, Emmet, Hancock and 11 more90 min
Jun 26, 9:33 PM CDTMesoscale DiscussionSPCPlymouth, Woodbury87 min
Jun 26, 10:58 PM CDTMesoscale DiscussionSPCAllamakee, Black Hawk, Boone, Bremer, Buchanan, Butler and 12 more92 min
Jun 27, 1:16 AM CDTMesoscale DiscussionSPCAllamakee, Clayton, Delaware, Dubuque89 min
Jun 27, 2:06 AM CDTMesoscale DiscussionSPCAdair, Adams, Audubon, Boone, Carroll, Cass and 24 more84 min
Jun 27, 5:58 AM CDTMesoscale DiscussionSPCAppanoose, Cedar, Clayton, Clinton, Davis, Decatur and 21 more92 min
Jul 4, 2:34 PM CDTMesoscale DiscussionSPCPage116 min
Jul 7, 2:54 PM CDTMesoscale DiscussionSPCAudubon, Boone, Buena Vista, Calhoun, Carroll, Cass and 25 more96 min
Jul 10, 7:11 PM CDTMesoscale DiscussionSPCLyon, Plymouth, Sioux34 min
Jul 10, 11:00 PM CDTMesoscale DiscussionSPCCherokee, Dickinson, Lyon, O'Brien, Osceola, Plymouth and 2 more60 min
Jul 14, 10:29 AM CDTMesoscale DiscussionSPCAllamakee, Bremer, Butler, Cerro Gordo, Chickasaw, Clayton and 6 more2 hr
Jul 14, 2:26 PM CDTMesoscale DiscussionSPCCalhoun, Cerro Gordo, Franklin, Hamilton, Hancock, Humboldt and 5 more94 min
Jul 14, 2:30 PM CDTMesoscale DiscussionSPCAdams, Audubon, Cass, Crawford, Fremont, Harrison and 7 more90 min
Jul 14, 7:37 PM CDTMesoscale DiscussionSPCAdair, Adams, Appanoose, Black Hawk, Boone, Butler and 26 more83 min
Jul 14, 9:25 PM CDTMesoscale DiscussionSPCAllamakee, Clayton, Dubuque95 min
Jul 14, 10:54 PM CDTMesoscale DiscussionSPCAdair, Adams, Black Hawk, Boone, Bremer, Butler and 21 more96 min
Jul 14, 11:47 PM CDTMesoscale DiscussionSPCClayton58 min
Jul 16, 3:41 PM CDTMesoscale DiscussionSPCBuena Vista, Calhoun, Cherokee, Clay, Crawford, Dickinson and 17 more2 hr
Jul 16, 7:28 PM CDTMesoscale DiscussionSPCAdair, Allamakee, Audubon, Boone, Bremer, Buena Vista and 43 more92 min
Jul 17, 5:56 PM CDTMesoscale DiscussionSPCDickinson, Emmet, Winnebago94 min
Jul 17, 7:54 PM CDTMesoscale DiscussionSPCBuena Vista, Cherokee, Clay, Dickinson, Emmet, Ida and 9 more96 min
Jul 17, 11:59 PM CDTMesoscale DiscussionSPCAdair, Allamakee, Audubon, Benton, Black Hawk, Boone and 55 more91 min
Jul 18, 2:31 AM CDTMesoscale DiscussionSPCAdair, Adams, Allamakee, Appanoose, Audubon, Benton and 55 more59 min
Jul 18, 4:58 AM CDTMesoscale DiscussionSPCAppanoose, Clarke, Davis, Decatur, Jasper, Jefferson and 9 more62 min
Jul 18, 5:58 AM CDTMesoscale DiscussionSPCDavis, Des Moines, Henry, Jefferson, Lee, Van Buren and 1 more32 min
Jul 18, 7:19 AM CDTMesoscale DiscussionSPCDes Moines26 min
Jul 19, 3:00 AM CDTMesoscale DiscussionSPCAdair, Audubon, Buena Vista, Calhoun, Carroll, Cass and 16 more60 min
Jul 19, 2:09 PM CDTMesoscale DiscussionSPCAppanoose, Clarke, Davis, Decatur, Lucas, Ringgold and 3 more2 hr
Jul 19, 7:21 PM CDTMesoscale DiscussionSPCAppanoose, Davis, Des Moines, Henry, Jefferson, Keokuk and 12 more84 min
Jul 19, 10:26 PM CDTMesoscale DiscussionSPCAdams, Fremont, Mills, Montgomery, Page, Pottawattamie and 2 more2 hr
Jul 19, 11:02 PM CDTMesoscale DiscussionSPCAppanoose, Davis, Des Moines, Henry, Jefferson, Lee and 1 more88 min
Jul 20, 1:09 AM CDTMesoscale DiscussionSPCAdair, Adams, Cass, Clarke, Decatur, Fremont and 10 more36 min
Jul 20, 4:13 AM CDTMesoscale DiscussionSPCDecatur, Wayne62 min
Jul 21, 8:21 PM CDTMesoscale DiscussionSPCBuena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 9 more54 min
Jul 21, 11:40 PM CDTMesoscale DiscussionSPCBuena Vista, Cherokee, Clay, Dickinson, Emmet, Humboldt and 8 more2 hr
Jul 22, 2:48 AM CDTMesoscale DiscussionSPCBenton, Black Hawk, Bremer, Buchanan, Butler, Calhoun and 21 more57 min
Jul 22, 2:06 PM CDTMesoscale DiscussionSPCAudubon, Black Hawk, Boone, Bremer, Buchanan, Buena Vista and 30 more114 min
Jul 22, 3:01 PM CDTMesoscale DiscussionSPCAllamakee, Clayton59 min
Jul 22, 6:38 PM CDTMesoscale DiscussionSPCClayton2 hr
Jul 22, 8:25 PM CDTMesoscale DiscussionSPCAdair, Audubon, Benton, Black Hawk, Boone, Buchanan and 29 more95 min
Jul 22, 11:00 PM CDTMesoscale DiscussionSPCClinton, Delaware, Dubuque, Jackson, Jones, Linn90 min
Jul 23, 1:23 AM CDTMesoscale DiscussionSPCBremer, Clayton, Dubuque, Fayette52 min
Jul 23, 3:26 AM CDTMesoscale DiscussionSPCBoone, Calhoun, Carroll, Crawford, Greene, Grundy and 7 more94 min
Jul 23, 2:30 PM CDTMesoscale DiscussionSPCCedar, Clinton, Des Moines, Henry, Jackson, Jefferson and 7 more90 min
Jul 23, 5:19 PM CDTMesoscale DiscussionSPCAppanoose, Clarke, Davis, Decatur, Henry, Jefferson and 11 more86 min
Jul 23, 6:58 PM CDTMesoscale DiscussionSPCBuena Vista, Cherokee, Clay, Dickinson, Lyon, O'Brien and 4 more92 min
Jul 23, 7:50 PM CDTMesoscale DiscussionSPCClarke, Iowa, Jasper, Keokuk, Lucas, Mahaska and 7 more85 min
Jul 23, 10:49 PM CDTMesoscale DiscussionSPCBremer, Buena Vista, Butler, Calhoun, Cerro Gordo, Cherokee and 28 more86 min
Jul 23, 11:31 PM CDTMesoscale DiscussionSPCAllamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more2 hr
Jul 24, 3:37 PM CDTMesoscale DiscussionSPCDes Moines, Henry, Lee, Louisa, Muscatine, Scott and 1 more83 min
Jul 27, 11:18 PM CDTMesoscale DiscussionSPCBuena Vista, Cherokee, Clay, Ida, Lyon, O'Brien and 3 more57 min
Jul 28, 2:06 AM CDTMesoscale DiscussionSPCAllamakee, Bremer, Chickasaw, Clayton, Fayette, Floyd and 2 more84 min
Aug 2, 4:14 AM CDTMesoscale DiscussionSPCAdams, Audubon, Carroll, Cass, Crawford, Greene and 8 more2 hr
Aug 2, 3:55 PM CDTMesoscale DiscussionSPCAdair, Adams, Cass, Fremont, Mills, Montgomery and 5 more65 min
Aug 3, 12:04 AM CDTMesoscale DiscussionSPCAudubon, Benton, Boone, Carroll, Cedar, Crawford and 15 more3 hr
Aug 3, 8:58 PM CDTMesoscale DiscussionSPCLyon62 min
Aug 3, 9:47 PM CDTMesoscale DiscussionSPCAdair, Adams, Appanoose, Audubon, Cass, Clarke and 24 more58 min
Aug 4, 1:05 AM CDTMesoscale DiscussionSPCCedar, Des Moines, Henry, Jefferson, Johnson, Keokuk and 7 more85 min
Aug 4, 2:57 AM CDTMesoscale DiscussionSPCDecatur, Page, Ringgold, Taylor, Wayne93 min
Aug 4, 3:42 AM CDTMesoscale DiscussionSPCCedar, Des Moines, Muscatine, Scott63 min
Aug 7, 6:38 AM CDTMesoscale DiscussionSPCCerro Gordo, Franklin, Hancock, Mitchell, Winnebago, Worth3 hr
Aug 8, 2:19 PM CDTMesoscale DiscussionSPCBuena Vista, Calhoun, Cherokee, Clay, Crawford, Dickinson and 13 more86 min
Aug 8, 3:44 PM CDTMesoscale DiscussionSPCCherokee, Lyon, Plymouth, Sioux, Woodbury91 min
Aug 8, 5:47 PM CDTMesoscale DiscussionSPCAudubon, Buena Vista, Calhoun, Carroll, Cerro Gordo, Cherokee and 28 more58 min
Aug 8, 8:57 PM CDTMesoscale DiscussionSPCAudubon, Boone, Buena Vista, Calhoun, Carroll, Cerro Gordo and 32 more63 min
Aug 8, 9:40 PM CDTMesoscale DiscussionSPCAllamakee, Benton, Buchanan, Cedar, Chickasaw, Clayton and 17 more95 min
Aug 8, 10:14 PM CDTMesoscale DiscussionSPCAudubon, Benton, Boone, Carroll, Cedar, Crawford and 17 more3 hr
Aug 8, 11:19 PM CDTMesoscale DiscussionSPCAdair, Allamakee, Audubon, Benton, Black Hawk, Boone and 62 more86 min
Aug 9, 2:20 AM CDTMesoscale DiscussionSPCAllamakee, Appanoose, Benton, Black Hawk, Boone, Bremer and 54 more100 min
Aug 9, 4:46 AM CDTMesoscale DiscussionSPCAppanoose, Cedar, Clarke, Davis, Decatur, Des Moines and 22 more3 hr
Aug 10, 6:28 AM CDTMesoscale DiscussionSPCAllamakee, Black Hawk, Bremer, Buchanan, Buena Vista, Butler and 22 more3 hr
Aug 10, 1:32 PM CDTMesoscale DiscussionSPCAudubon, Buena Vista, Calhoun, Carroll, Cass, Cherokee and 21 more58 min
Aug 10, 5:08 PM CDTMesoscale DiscussionSPCAllamakee, Bremer, Butler, Chickasaw, Fayette, Floyd and 4 more67 min
Aug 12, 2:05 PM CDTMesoscale DiscussionSPCCherokee, Clay, Dickinson, Lyon, O'Brien, Osceola and 3 more115 min
Aug 13, 12:48 AM CDTMesoscale DiscussionSPCAllamakee, Howard, Mitchell, Winnebago, Winneshiek, Worth57 min
Aug 13, 2:58 AM CDTMesoscale DiscussionSPCLyon, Sioux62 min
Aug 13, 4:20 AM CDTMesoscale DiscussionSPCAllamakee, Clayton, Delaware, Dubuque, Fayette115 min
Aug 13, 9:16 AM CDTMesoscale DiscussionSPCAdair, Adams, Audubon, Boone, Buena Vista, Butler and 42 more119 min
Aug 13, 10:36 AM CDTMesoscale DiscussionSPCAdair, Adams, Allamakee, Appanoose, Audubon, Benton and 83 more84 min
Aug 13, 12:04 PM CDTMesoscale DiscussionSPCAllamakee, Bremer, Cerro Gordo, Chickasaw, Clay, Clayton and 14 more56 min
Aug 13, 1:54 PM CDTMesoscale DiscussionSPCCedar, Clinton, Davis, Des Moines, Henry, Jackson and 9 more66 min
Aug 13, 7:22 PM CDTMesoscale DiscussionSPCCerro Gordo, Chickasaw, Emmet, Fayette, Floyd, Hancock and 7 more53 min
Aug 14, 2:23 PM CDTMesoscale DiscussionSPCBuena Vista, Cherokee, Clay, Dickinson, Emmet, Hancock and 7 more67 min
Aug 14, 6:31 PM CDTMesoscale DiscussionSPCCerro Gordo, Emmet, Hancock, Howard, Kossuth, Mitchell and 2 more59 min
Aug 16, 2:50 PM CDTMesoscale DiscussionSPCCass, Harrison, Mills, Monona, Pottawattamie, Shelby85 min
Aug 19, 3:30 AM CDTMesoscale DiscussionSPCAllamakee, Cerro Gordo, Chickasaw, Fayette, Floyd, Howard and 4 more2 hr
Aug 19, 11:53 PM CDTMesoscale DiscussionSPCBuena Vista, Cherokee, Clay, Dickinson, Emmet, Hancock and 10 more67 min
Aug 20, 5:20 PM CDTMesoscale DiscussionSPCAppanoose, Cedar, Clinton, Davis, Decatur, Des Moines and 22 more85 min
Aug 31, 1:52 AM CDTMesoscale DiscussionSPCDickinson, Lyon, O'Brien, Osceola, Plymouth, Sioux83 min
Aug 31, 3:26 PM CDTMesoscale DiscussionSPCAdair, Adams, Audubon, Boone, Buena Vista, Butler and 37 more34 min
Aug 31, 7:29 PM CDTMesoscale DiscussionSPCDecatur, Ringgold, Taylor, Wayne61 min
Aug 31, 8:11 PM CDTMesoscale DiscussionSPCAllamakee, Black Hawk, Bremer, Buchanan, Clayton, Fayette and 6 more94 min
Aug 31, 9:46 PM CDTMesoscale DiscussionSPCAppanoose, Benton, Buchanan, Clayton, Davis, Delaware and 11 more59 min
Sep 1, 6:19 PM CDTMesoscale DiscussionSPCAdair, Adams, Audubon, Cass, Crawford, Fremont and 9 more116 min
Sep 1, 11:28 PM CDTMesoscale DiscussionSPCLyon, O'Brien, Sioux62 min
Sep 2, 3:15 AM CDTMesoscale DiscussionSPCBuena Vista, Cherokee, Clay, Crawford, Dickinson, Emmet and 12 more90 min
Sep 2, 2:34 PM CDTMesoscale DiscussionSPCAllamakee, Clayton86 min
Sep 6, 5:38 PM CDTMesoscale DiscussionSPCAdair, Allamakee, Appanoose, Benton, Black Hawk, Boone and 43 more97 min
Sep 12, 6:08 PM CDTMesoscale DiscussionSPCDubuque, Jackson67 min
Sep 13, 5:45 PM CDTMesoscale DiscussionSPCAdams, Fremont, Montgomery, Page, Ringgold, Taylor60 min
Sep 15, 1:50 PM CDTMesoscale DiscussionSPCClay, Dickinson, Emmet, Lyon, O'Brien, Osceola and 2 more55 min
Sep 15, 3:42 PM CDTMesoscale DiscussionSPCAudubon, Carroll, Cherokee, Crawford, Guthrie, Harrison and 8 more93 min
Sep 15, 6:07 PM CDTMesoscale DiscussionSPCAllamakee, Bremer, Buena Vista, Butler, Cerro Gordo, Cherokee and 26 more53 min
Sep 15, 7:32 PM CDTMesoscale DiscussionSPCAudubon, Boone, Bremer, Butler, Calhoun, Carroll and 21 more28 min
Sep 17, 6:20 PM CDTMesoscale DiscussionSPCAdair, Adams, Audubon, Carroll, Cass, Crawford and 16 more85 min
Sep 18, 1:00 AM CDTMesoscale DiscussionSPCAdair, Adams, Audubon, Carroll, Cass, Crawford and 10 more60 min
Sep 18, 2:16 AM CDTMesoscale DiscussionSPCBremer, Butler, Calhoun, Cerro Gordo, Chickasaw, Floyd and 11 more59 min
Sep 18, 4:42 AM CDTMesoscale DiscussionSPCAdair, Audubon, Carroll, Cass, Crawford, Dallas and 7 more63 min
Sep 18, 8:26 PM CDTMesoscale DiscussionSPCAdair, Adams, Appanoose, Audubon, Benton, Boone and 51 more94 min
Sep 21, 1:02 PM CDTMesoscale DiscussionSPCAppanoose, Cedar, Clinton, Davis, Des Moines, Henry and 16 more88 min
Sep 21, 3:40 PM CDTMesoscale DiscussionSPCDes Moines, Henry, Jefferson, Lee, Louisa, Muscatine and 2 more95 min
Sep 21, 5:59 PM CDTMesoscale DiscussionSPCAppanoose, Davis, Decatur, Lucas, Monroe, Ringgold and 3 more91 min
Sep 22, 8:48 AM CDTMesoscale DiscussionSPCLyon, Sioux87 min
Sep 22, 2:04 PM CDTMesoscale DiscussionSPCBuena Vista, Cherokee, Clay, Dickinson, Emmet, Kossuth and 6 more86 min
Sep 22, 5:36 PM CDTMesoscale DiscussionSPCBuena Vista, Cerro Gordo, Cherokee, Chickasaw, Clay, Dickinson and 22 more54 min
Sep 22, 10:35 PM CDTMesoscale DiscussionSPCBuena Vista, Cherokee, Clay, Ida, O'Brien, Plymouth and 3 more55 min
Oct 23, 2:12 PM CDTMesoscale DiscussionSPCDecatur, Ringgold, Taylor93 min
Oct 23, 5:13 PM CDTMesoscale DiscussionSPCBuena Vista, Calhoun, Cherokee, Clay, Crawford, Dickinson and 15 more62 min
Oct 23, 6:23 PM CDTMesoscale DiscussionSPCAppanoose, Clarke, Davis, Decatur, Jefferson, Keokuk and 11 more67 min
Oct 25, 9:36 PM CDTMesoscale DiscussionSPCAppanoose, Benton, Black Hawk, Bremer, Buchanan, Butler and 42 more24 min
Oct 26, 2:21 AM CDTMesoscale DiscussionSPCCedar, Clayton, Clinton, Delaware, Des Moines, Dubuque and 7 more114 min
Nov 12, 9:19 PM CSTMesoscale DiscussionSPCBuena Vista, Cherokee, Clay, Crawford, Dickinson, Emmet and 10 more4 hr
Nov 13, 2:28 AM CSTMesoscale DiscussionSPCBuena Vista, Cherokee, Clay, Dickinson, Emmet, Ida and 1 more5 hr
Nov 22, 2:32 AM CSTMesoscale DiscussionSPCCerro Gordo, Hancock, Humboldt, Kossuth, Mitchell, Winnebago and 2 more6 hr
Nov 22, 10:50 AM CSTMesoscale DiscussionSPCCedar, Clinton, Davis, Des Moines, Henry, Jackson and 8 more85 min
Nov 22, 2:10 PM CSTMesoscale DiscussionSPCCedar, Clinton, Des Moines, Henry, Jackson, Lee and 3 more95 min
Dec 3, 10:13 AM CSTMesoscale DiscussionSPCBlack Hawk, Bremer, Butler, Cerro Gordo, Chickasaw, Fayette and 6 more4 hr
Dec 3, 5:50 PM CSTMesoscale DiscussionSPCAllamakee, Chickasaw, Clayton, Delaware, Dubuque, Fayette and 4 more5 hr
Dec 10, 4:40 PM CSTMesoscale DiscussionSPCAllamakee, Howard, Mitchell, Winnebago, Winneshiek, Worth4 hr
Dec 11, 9:56 AM CSTMesoscale DiscussionSPCClay, Dickinson, Emmet, Kossuth, Palo Alto, Winnebago and 1 more5 hr
Dec 11, 1:46 PM CSTMesoscale DiscussionSPCAllamakee, Cerro Gordo, Chickasaw, Floyd, Howard, Mitchell and 2 more6 hr
Dec 11, 6:49 PM CSTMesoscale DiscussionSPCAllamakee, Bremer, Chickasaw, Clayton, Fayette, Howard and 1 more5 hr
Dec 31, 9:29 AM CSTMesoscale DiscussionSPCAdair, Adams, Appanoose, Audubon, Benton, Black Hawk and 53 more5 hr
Dec 31, 11:22 AM CSTMesoscale DiscussionSPCLyon, Sioux5 hr

By county

Every county with at least one alert. A county page lists each alert that covered it.

59 more counties

The busiest days

Days with the most alerts issued, by UTC date.

  1. June 18, 201012mesoscale discussions
  2. April 30, 201010mesoscale discussions
  3. April 6, 20108mesoscale discussions
  4. June 21, 20108mesoscale discussions
  5. June 5, 20107mesoscale discussions
  6. June 23, 20107mesoscale discussions
  7. July 23, 20107mesoscale discussions
  8. August 13, 20107mesoscale discussions
  9. June 26, 20106mesoscale discussions
  10. July 18, 20106mesoscale discussions
  11. July 22, 20106mesoscale discussions
  12. August 9, 20106mesoscale discussions

Nearby

Alerts in force nowTornadoes on recordThe radar archive20092011

Sources

National Weather Service watches, warnings, advisories and statements from the Iowa Environmental Mesonet's VTEC archive, which reconstructs tornado, severe thunderstorm, flash flood and marine warnings back to 1986 from the NWS text archive. Storm Prediction Center watches and mesoscale discussions from SPC's archive through the Mesonet. County centers from the US Census Bureau. Warning verification from the Mesonet's Cow. Rebuilt daily.